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Two short magnets each of moment M are p...

Two short magnets each of moment M are placed one over the other at right angles. The resultant magnetic induction at a point 'P', that lies at a distance 'd' from the common centre is

A

`(mu_0)/( 4 pi ) (3M )/( d^3)`

B

` sqrt(3) (mu_0 )/( 4 pi ) ( 3M )/( d^3)`

C

` sqrt(5) ( mu_0 )/( 4pi ) (M )/( d^3)`

D

`(mu_0) /( 4 pi ) (M )/(d^3)`

Text Solution

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AAKASH SERIES-APPENDICES ( REVISION EXERCISE )-REVISION EXERCISE (MAGNETISM AND MATTER )
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  2. The pole strength of a 12cm long bar magnet is 20Am. The magnetic indu...

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  3. Two short magnets each of moment M are placed one over the other at ri...

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  4. A short bar magnet of magnetic movement 5.25xx10^(-2)J T^(-1) is plac...

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  5. Two solenoids acting as short bar magnets P and Q are arranged such th...

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  6. Find the magnetic field due to a dipole of magnetic moment 1.2 A m^2 a...

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  7. Two magnets of moments M1 and M2 are rigidly fixed together at their ...

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  8. A short bar magnet of magnetic moment 0.32JT^(-1) is placed in a unifo...

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  9. A magnet is suspended in the magnetic meridian with an untwisted wire....

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  10. A magnet of magnetic moment 5Am^(2) is freely suspended in a uniform m...

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  11. A magnetic dipole is acted upon by two magnetic fields which are incli...

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  12. Two small magnets X and Y of dipole moments M1 and M2 are fixed perpen...

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  13. If 'W' Joule is the work done in rotating the magnet from the field di...

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  14. A magnetic needle lying parallel to a magnetic field requires W units ...

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  15. A bar magnet of magnetic moment 2.0 A m^2 is free to rotate about a ve...

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  16. A short bar magnet placed with its axis at 30^@ with a uniform externa...

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  17. A bar magnet takes pi/10 seconds to complete one oscillation in unifor...

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  18. A small magnet of moment 4.8 xx 10^(-2) J/T is suspended freely in t...

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  19. A short bar magnet used in a vibration magnetometer is heated so as to...

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  20. A compass needle makes 10 oscillations per minute in the earths horizo...

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